Don't really get the hate for them to be honest.
Eminem was making them to be serious so how can you say they're bad? You can't say Big Weenie is dumb because it's meant to be dumb. Argument is dumb like the song which is meant to be, IMO.
Unlike something like I'm Shady which turns out supid ("shoot up the playground and tell the kids to stay cool" - doesnt even make sense why would shooting make you cool WTF and "my teacher sucked my wee wee in pre school" is so immature and "I wanna be killed twice" not even possible). Yet everyone loves it.
It obviously isn't the exection because his flow on Big Weenie is amaazzzzzing!!! Have you heard the second verse? Plus it's a song to the haters, IMO. I'm Shady has an annoying voice and stupid lines and stuff.
These songs are what make Em great (raping about stupid shit) and is why he's better than all rapers who rape about guns and hoes (Sadistik and Lowkey for eg)